CN109659584B - Hydrogen spray control method, device, equipment, system and storage medium - Google Patents
Hydrogen spray control method, device, equipment, system and storage medium Download PDFInfo
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- CN109659584B CN109659584B CN201811473846.1A CN201811473846A CN109659584B CN 109659584 B CN109659584 B CN 109659584B CN 201811473846 A CN201811473846 A CN 201811473846A CN 109659584 B CN109659584 B CN 109659584B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04388—Pressure; Ambient pressure; Flow of anode reactants at the inlet or inside the fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04664—Failure or abnormal function
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention provides a hydrogen injection control method, a device, equipment, a system and a storage medium thereof, which accurately control the hydrogen inlet flow and monitor the working state of the system in real time by adding a hydrogen injection system on the basis of a traditional fuel cell controller. The invention can accurately and reliably control the hydrogen supply amount of the fuel cell stack in real time according to different working conditions, effectively improve the working efficiency of the fuel cell and improve the dynamic property and the economical efficiency of a fuel cell automobile.
Description
Technical Field
The present invention relates to the field of fuel injection control technology, and more particularly, to a hydrogen injection control method, apparatus, system, and storage medium.
Background
With the shortage of natural resources such as petroleum and coal in various countries in the world, clean energy such as wind energy, nuclear energy, solar energy and fuel cells are more and more valued by governments in various countries. China is a big country for coal reserves and consumption, and simultaneously China is a 'weak country' for petroleum and gas, a large amount of oil and gas import support is needed every year, and the development of new energy industry is a necessary result of complying with energy structure reform.
The fuel cell directly generates electric energy through chemical reaction of fuel (pure hydrogen, methane, etc.) among 2 electrodes divided by an electrolyte. Compared with gasoline engines and diesel engines, the fuel cell has extremely high energy utilization efficiency, and the emission is only water, so that the fuel cell has no pollution to the environment.
Under the background, a fuel cell automobile using clean energy hydrogen as fuel is developed, which has the advantages of energy saving, environmental protection, long driving range and the like, but also has the problems of insufficient instantaneous power and slow system power regulation. At present, most of hydrogen supply control systems of domestic fuel cell automobiles use a framework of a high-pressure cylinder valve and a proportional valve, the system has the advantages of low cost and simplicity and convenience in control, but the hydrogen supply amount cannot be accurately adjusted due to the fact that the hydrogen supply control system only has 2 states of opening and closing, the system has delayed reaction, and the hydrogen supply control system has the defects of slow reaction and poor sensitivity in the using process.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a hydrogen injection control method, and a device, an apparatus, a system and a storage medium thereof, which are used for solving the problems of slow response and poor sensitivity during the operation of the existing fuel cell system.
To achieve the above and other related objects, the present invention provides a hydrogen injection control method, including: receiving a hydrogen injection instruction, and calculating the target hydrogen injection flow in real time according to the hydrogen injection instruction; sending a hydrogen spray control signal containing a PWM signal and/or Peak-Hold output current according to the target hydrogen spray flow so as to control the hydrogen spray of the hydrogen sprayer in real time; acquiring the real-time hydrogen jet flow quantity of the hydrogen sprayer in real time, and comparing the real-time hydrogen jet flow quantity with the target hydrogen jet flow quantity to correspondingly adjust the hydrogen spray control signal according to the difference; and detecting the fault of the driving loop in real time, and judging the fault degree of the driving loop so as to correspondingly limit the real-time hydrogen jet flow according to the fault degree.
In an embodiment of the present invention, the method for controlling hydrogen injection of a hydrogen injector in real time includes: adjusting the duty cycle of the PWM signal to change the on-time of the hydrogen sprayer in the period; and/or adjusting the Peak-Hold output current to be Peak large current or Hold small current so as to change the response speed of the hydrogen sprayer.
In an embodiment of the invention, the method for adjusting the hydrogen injection control signal further includes: and preferentially selecting and adjusting the duty ratio of the PWM signal, and then selecting and adjusting the Peak-Hold output current to be a Peak large current or a Hold small current.
In an embodiment of the present invention, the driving circuit fault includes: communication fault, drive chip fault, hydrogen sprayer short circuit, hydrogen sprayer open circuit, excessive undercurrent, excess temperature, and excessive undervoltage.
In an embodiment of the present invention, the method for determining the fault degree thereof to correspondingly limit the real-time hydrogen jet flow according to the fault degree comprises: judging the faults of the driving circuit and dividing the fault degree into 3 fault grades; when the fault degree is 1-level fault, limiting the real-time hydrogen injection flow to 65% -75% of the original flow; when the fault degree is a 2-level fault, limiting the real-time hydrogen injection flow to be 45% -55% of the original flow; and when the fault degree is a 3-level fault, directly stopping the real-time hydrogen injection flow.
In an embodiment of the present invention, the method further includes: and acquiring any one or more state information of voltage, current, temperature and pressure of the hydrogen sprayer in real time to serve as reference data for adjusting the control signal.
To achieve the above and other related objects, the present invention provides a hydrogen spray control apparatus, comprising: the acquisition module is used for receiving the hydrogen injection instruction and calculating the target hydrogen injection flow in real time according to the hydrogen injection instruction; the processing module is used for sending a hydrogen spray control signal containing a PWM signal and/or Peak-Hold output current according to the target hydrogen spray flow so as to control the hydrogen spray of the hydrogen sprayer in real time; acquiring the real-time hydrogen jet flow quantity of the hydrogen sprayer in real time, and comparing the real-time hydrogen jet flow quantity with the target hydrogen jet flow quantity to correspondingly adjust the hydrogen spray control signal according to the difference; and detecting the fault of the driving loop in real time, and judging the fault degree of the driving loop so as to correspondingly limit the real-time hydrogen jet flow according to the fault degree.
To achieve the above and other related objects, the present invention provides a hydrogen spray control apparatus, comprising: a memory having a computer program stored thereon; a processor for executing a computer program stored in the memory, the program, when executed by the processor, implementing the hydrogen injection control method as described above; and the communicator is used for being in communication connection with external equipment to receive the hydrogen spraying command.
To achieve the above and other related objects, the present invention provides a hydrogen injection control system, comprising: the hydrogen spray control device, the hydrogen sprayer, and the sensor as described above; the hydrogen sprayer is electrically connected with the hydrogen spraying control equipment and used for receiving a hydrogen spraying control signal sent by the hydrogen spraying control equipment to drive hydrogen spraying; the sensor is used for acquiring the real-time hydrogen spraying flow of the hydrogen sprayer in real time and acquiring any one or more state information of voltage, current, temperature and pressure of the hydrogen sprayer in real time; the sensor is respectively electrically connected with the hydrogen sprayer and the hydrogen spraying control equipment.
To achieve the above and other related objects, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a hydrogen injection control method as described above.
As described above, the present invention provides a hydrogen injection control method, apparatus, device, system, and storage medium. By adding the hydrogen injection system on the basis of the traditional fuel cell controller, the hydrogen inlet flow is accurately controlled and the working state of the system is monitored in real time. The following beneficial effects are achieved:
the hydrogen supply quantity of the fuel cell stack can be accurately and reliably controlled in real time according to different working conditions, the working efficiency of the fuel cell can be effectively improved, and the dynamic property and the economical efficiency of a fuel cell automobile are improved.
Drawings
Fig. 1 is a schematic flow chart of a hydrogen injection control method in an embodiment of the present invention.
FIG. 2 is a waveform diagram of a Peak-Hold model according to an embodiment of the present invention.
Fig. 3 is a block diagram of a hydrogen injection control apparatus according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a hydrogen injection control apparatus in an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a hydrogen injection control system according to an embodiment of the present invention.
Description of the element reference numerals
Method steps S101 to S104
300 hydrogen spraying control device
301 acquisition module
302 processing module
400 hydrogen spraying control equipment
401 memory
402 processor
403 communicator
500 hydrogen spraying control system
501 hydrogen spraying control equipment
502 hydrogen sprayer
503 sensor
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
In an embodiment of the present invention, the hydrogen injection control method, the apparatus, the system, and the storage medium according to the present invention can be implemented by adding on the basis of the existing fuel cell controller, and do not require substantial modification of the existing fuel cell or fuel cell controller, which is convenient for installation and has strong universality.
As shown in fig. 1, a schematic flow chart of a hydrogen injection control method in an embodiment of the present invention is shown, and as shown in the drawing, the method includes:
step S101: and receiving a hydrogen injection instruction, and calculating the target hydrogen injection flow in real time according to the hydrogen injection instruction.
In one embodiment of the present invention, the method is applied to a hydrogen injection control device or apparatus that can be matched to an existing fuel cell system controller through an initialization check.
For example, the current system working conditions (such as driving current waveform and driving frequency) are sent to the device or equipment applying the method through the existing fuel cell system controller, initialization is carried out, if the initialization verification is successful, the device or equipment can independently operate and establish matching with the existing fuel cell system controller, and a hydrogen injection command sent by the existing fuel cell system controller can be received in real time.
As another example, the existing fuel cell system controller is communicatively coupled to the device or apparatus to which the method is applied via a Serial Peripheral Interface (SPI) to receive the hydrogen injection command.
In an embodiment of the present invention, the specific method for receiving the hydrogen injection command and calculating the target hydrogen injection flow in real time may be, for example, a brief response of the hydrogen injection command to start, work, and end. Assuming that the hydrogen injection command is the starting moment, the maximum hydrogen injection flow is needed, namely, the hydrogen injector needs to be opened quickly. At the moment of work, the hydrogen spraying command changes at any time, the maximum hydrogen spraying flow also changes at any time, namely the opening state of the hydrogen sprayer needs to be maintained, and the hold low current needs to be adjusted to reduce the heat generation of the hydrogen sprayer.
Therefore, the target hydrogen injection flow rate is calculated in real time according to the received hydrogen injection command.
Step S102: and sending a hydrogen spray control signal containing a PWM signal and/or Peak-Hold output current according to the target hydrogen spray flow so as to control the hydrogen spray of the hydrogen sprayer in real time.
In an embodiment of the present invention, the method for controlling hydrogen injection of a hydrogen injector in real time includes: adjusting the duty cycle of the PWM signal to change the on-time of the hydrogen sprayer in the period; and/or adjusting the Peak-Hold output current to be Peak large current or Hold small current so as to change the response speed of the hydrogen sprayer.
In an embodiment of the invention, the PWM signal is a PWM signal with a fixed frequency and an adjustable duty ratio. And adjusting the duty ratio of the PWM signal to change the opening time of the hydrogen sprayer in the period.
For example, when the PWM signal is at a high level (5V), the hydrogen injector is controlled to start the injection drive, and when the PWM signal is at a low level (0V), the hydrogen injector is controlled to stop the injection drive.
In an embodiment of the invention, the Peak-Hold output current is obtained based on a Peak-Hold model.
Fig. 2 shows a waveform diagram of a Peak-Hold model in an embodiment of the present invention. The Peak-Hold model mainly comprises 3 stages, namely a large current rising stage T1, a Peak current Ip maintaining stage T2 and a small current Ih maintaining stage T3. The current flowing through the solenoid valve rapidly rises in the stages of T1 and T2, is sampled by a sensor and then is maintained at the peak current for a period of time, so that the solenoid valve is opened rapidly and is opened completely. When the solenoid valve is opened stably, a small current is required to ensure that the solenoid valve is in an open state, and then a small current maintaining period T3 is entered. When the electromagnetic valve is required to be closed, the small current can be quickly attenuated, and the electromagnetic valve is quickly and reliably closed.
For example, when a hydrogen spraying instruction is received, firstly, the output peak heavy current is controlled, the speed of opening the hydrogen sprayer is increased, and the hydrogen sprayer is opened faster when the current at the stage is larger; then after the working point is reached, the hold low current is adjusted, the opening state of the hydrogen sprayer is maintained, the heating of the hydrogen sprayer is reduced, and the longer the hold stage time is, the larger the flow is; and finally, receiving an injection stop signal, and stopping injection when the injection current is reduced to 0A.
Step S103: and acquiring the real-time hydrogen jet flow quantity of the hydrogen sprayer in real time, and comparing the real-time hydrogen jet flow quantity with the target hydrogen jet flow quantity to correspondingly adjust the hydrogen spray control signal according to the difference.
In an embodiment of the present invention, the method further includes: and acquiring any one or more state information of voltage, current, temperature and pressure of the hydrogen sprayer in real time to serve as reference data for adjusting the control signal.
For example, when the temperature of the hydrogen sprayer is detected to be too high, the Peak-Hold output current can be appropriately reduced to suppress heat generation.
In an embodiment of the invention, the method for adjusting the hydrogen injection control signal further includes: and preferentially selecting and adjusting the duty ratio of the PWM signal, and then selecting and adjusting the Peak-Hold output current to be a Peak large current or a Hold small current.
For example, when the hydrogen injection command is working most of the time, that is, the Peak-Hold output current is maintained at the Hold low current most of the time, so that the duty ratio of the PWM signal is preferably adjusted more flexibly and practically.
Step S104: and detecting the fault of the driving loop in real time, and judging the fault degree of the driving loop so as to correspondingly limit the real-time hydrogen jet flow according to the fault degree.
In an embodiment of the present invention, the driving circuit fault includes: communication fault, drive chip fault, hydrogen sprayer short circuit, hydrogen sprayer open circuit, excessive undercurrent, excess temperature, and excessive undervoltage.
For example, the existing fuel cell system controller and the device or apparatus applying the method establish a communication connection through a Serial Peripheral Interface (SPI), and can check whether the SPI has a communication failure (e.g., a transmission data failure, a clock loss failure, etc.) by receiving a feedback SPI message in real time.
For another example, by acquiring any one or more state information of voltage, current, temperature and pressure of the hydrogen sprayer in real time, whether faults such as short circuit, open circuit, over-current, under-current, over-temperature, over-voltage and under-voltage of the hydrogen sprayer occur or not can be monitored in real time.
In an embodiment of the present invention, any one or more status information of voltage, current, temperature, and pressure of the fuel cell may be obtained in real time to determine the failure of the driving circuit.
In an embodiment of the present invention, the method for determining the fault degree thereof to correspondingly limit the real-time hydrogen jet flow according to the fault degree comprises: judging the faults of the driving circuit and dividing the fault degree into 3 fault grades;
when the fault degree is 1-level fault, limiting the real-time hydrogen injection flow to 65% -75% of the original flow;
when the fault degree is a 2-level fault, limiting the real-time hydrogen injection flow to be 45% -55% of the original flow;
and when the fault degree is a 3-level fault, directly stopping the real-time hydrogen injection flow.
For example, when any one of the driving circuit faults occurs, the fault can be classified as a 1-level fault, and the real-time hydrogen injection flow is limited to 65% -75% of the original flow.
When any two driving circuit faults occur, the faults can be classified into 2-level faults, and the real-time hydrogen injection flow is limited to 45% -55% of the original flow.
When any three or more driving circuit faults occur, the faults can be classified into 3-level faults, and the real-time hydrogen injection flow can be directly stopped at the moment.
In an embodiment of the present invention, when any kind of drive circuit failure occurs, the hydrogen jet flow rate may not be stopped directly, because the drive circuit failure may not affect the driving of the whole fuel cell, and at this time, appropriately reducing the hydrogen jet flow rate is a reasonable and safe choice to avoid not only sudden stopping of the driving due to the over-sensitive or non-critical failure of the possible failure detection, but also the safety risk due to failure without processing.
It should be noted that, when any kind of drive circuit fault is detected, other corresponding systems may perform recheck or process to resolve the fault. And if the communication fault is detected, reinitializing to modify the communication connection.
In an embodiment of the present invention, the hydrogen injection control method according to the present invention improves flexibility and self-repairing capability in handling a fault in a fault handling procedure.
In conclusion, the hydrogen injection control method can accurately and reliably control the hydrogen supply amount of the fuel cell stack in real time according to different working conditions, can effectively improve the working efficiency of the fuel cell, and improves the dynamic property and the economical efficiency of the fuel cell automobile.
Fig. 3 is a block diagram of a hydrogen injection control apparatus according to an embodiment of the present invention. As shown, the apparatus 300 includes:
the acquisition module 301 is used for receiving a hydrogen injection instruction and calculating the target hydrogen injection flow in real time according to the hydrogen injection instruction;
the processing module 302 is used for sending a hydrogen spray control signal containing a PWM signal and/or Peak-Hold output current according to the target hydrogen spray flow so as to control the hydrogen spray of the hydrogen sprayer in real time; acquiring the real-time hydrogen jet flow quantity of the hydrogen sprayer in real time, and comparing the real-time hydrogen jet flow quantity with the target hydrogen jet flow quantity to correspondingly adjust the hydrogen spray control signal according to the difference; and detecting the fault of the driving loop in real time, and judging the fault degree of the driving loop so as to correspondingly limit the real-time hydrogen jet flow according to the fault degree.
In an embodiment of the present invention, the hydrogen injection control device 300 may be matched with an existing fuel cell system controller through an initialization check.
For example, the current system operating conditions (e.g., driving current waveform, driving frequency) are sent to the hydrogen injection control device 300 by the existing fuel cell system controller, and initialization is performed, and if the initialization verification is successful, the device or equipment can operate independently, establish matching with the existing fuel cell system controller, and receive the hydrogen injection command sent by the existing fuel cell system controller in real time.
In an embodiment of the present invention, the conventional fuel cell system controller establishes a communication connection with the hydrogen injection control device 300 through a Serial Peripheral Interface (SPI) to receive a hydrogen injection command.
For another example, the conventional fuel cell system controller and the hydrogen injection control device 300 establish a communication connection through a Serial Peripheral Interface (SPI), and may check whether a communication failure (such as a data transmission failure, a clock loss failure, etc.) occurs in the SPI by receiving a feedback SPI message in real time.
In an embodiment of the present invention, the hydrogen injection control method shown in fig. 1 can be implemented by using modules in combination.
It should be noted that the division of the modules of the above apparatus is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the processing module 302 may be a separate processing element, or may be integrated into a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and a processing element of the apparatus calls and executes the functions of the processing module 302. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
To achieve the above and other related objects, the present invention provides a computer-readable storage medium having an LED driving program stored thereon, wherein the program, when executed by a processor, implements the LED driving method.
As shown in fig. 4, a schematic structural diagram of a hydrogen injection control apparatus in an embodiment of the present invention is shown, where the apparatus 400 includes: a memory 401 having a computer program stored thereon; a processor 402 for executing a computer program stored in the memory 401, the program implementing the hydrogen injection control method as shown in fig. 1 when executed by the processor 402; and a communicator 403 for communicatively connecting an external device to receive a hydrogen injection command.
In one embodiment of the present invention, the hydrogen injection control apparatus 400 may be matched with an existing fuel cell system controller through an initialization check.
For example, the current system operating conditions (e.g., driving current waveform, driving frequency) are sent to the hydrogen injection control device 400 by the existing fuel cell system controller, and are initialized, and if the initialization verification is successful, the device or device can operate independently, establish matching with the existing fuel cell system controller, and receive the hydrogen injection command sent by the existing fuel cell system controller in real time.
In an embodiment of the present invention, the conventional fuel cell system controller establishes a communication connection with the hydrogen injection control device 400 through a Serial Peripheral Interface (SPI) to receive a hydrogen injection command.
For another example, the existing fuel cell system controller and the hydrogen injection control device 400 establish a communication connection through a Serial Peripheral Interface (SPI), and may check whether a communication failure (such as a data transmission failure, a clock loss failure, etc.) occurs in the SPI by receiving a feedback SPI message in real time.
The Memory 401 may include a Random Access Memory (RAM), and may further include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory.
The Processor 402 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the Integrated Circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component.
The communicator 403 is used to implement communication connection between the database access device and other devices (such as a client, a read-write library, and a read-only library). The communicator 403 may include one or more sets of modules of different communication manners, for example, a CAN communication module communicatively connected to a CAN bus. The communication connection may be one or more wired/wireless communication means and combinations thereof. The communication method comprises the following steps: any one or more of the internet, CAN, intranet, Wide Area Network (WAN), Local Area Network (LAN), wireless network, Digital Subscriber Line (DSL) network, frame relay network, Asynchronous Transfer Mode (ATM) network, Virtual Private Network (VPN), and/or any other suitable communication network. For example: any one or a plurality of combinations of WIFI, Bluetooth, NFC, GPRS, GSM and Ethernet.
Fig. 5 is a schematic structural diagram of a hydrogen injection control system according to an embodiment of the invention. As shown, the system 500 includes: a hydrogen spray control device 501, a hydrogen sprayer 502, and a sensor 503 as described in fig. 4.
The hydrogen sprayer 502 is electrically connected to the hydrogen spraying control device 501, and is configured to receive a hydrogen spraying control signal sent by the hydrogen spraying control device 501 to drive hydrogen spraying.
The sensor 503 is configured to obtain a real-time hydrogen injection flow rate of the hydrogen injector 502 in real time, and obtain any one or more status information of a voltage, a current, a temperature, and a pressure of the hydrogen injector 502 in real time.
In one embodiment of the present invention, the sensor 503 may be an integrated chip or device including any one or more sensors capable of measuring voltage, current, temperature, and pressure.
The sensor 503 is electrically connected to the hydrogen sprayer 502 and the hydrogen spraying control device 501 respectively.
To achieve the above and other related objects, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the hydrogen injection control method as shown in fig. 1.
The computer-readable storage medium, as will be appreciated by one of ordinary skill in the art: all or part of the steps for implementing the above method embodiments may be performed by hardware associated with a computer program. The aforementioned computer program may be stored in a computer readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A hydrogen injection control method, characterized by comprising:
receiving a hydrogen injection instruction, and calculating the target hydrogen injection flow in real time according to the hydrogen injection instruction;
sending a hydrogen spray control signal containing a PWM signal and/or Peak-Hold output current according to the target hydrogen spray flow so as to control the hydrogen spray of the hydrogen sprayer in real time; the method for controlling the hydrogen spraying of the hydrogen sprayer in real time comprises the following steps: adjusting the duty cycle of the PWM signal to change the on-time of the hydrogen sprayer in the period; and/or adjusting the Peak-Hold output current to be Peak large current or Hold small current so as to change the response speed of the hydrogen sprayer; preferentially selecting and adjusting the duty ratio of the PWM signal, and then selecting and adjusting the Peak-Hold output current to be a Peak large current or a Hold small current;
acquiring the real-time hydrogen jet flow quantity of the hydrogen sprayer in real time, and comparing the real-time hydrogen jet flow quantity with the target hydrogen jet flow quantity to correspondingly adjust the hydrogen spray control signal according to the difference;
detecting the fault of a driving loop in real time, and judging the fault degree of the driving loop so as to correspondingly limit the real-time hydrogen jet flow according to the fault degree; and judging the fault of the driving circuit by acquiring any one or more state information of voltage, current, temperature and pressure of the hydrogen sprayer or the fuel cell in real time.
2. The hydrogen injection control method of claim 1, wherein the drive circuit fault comprises: communication fault, drive chip fault, hydrogen sprayer short circuit, hydrogen sprayer open circuit, excessive undercurrent, excess temperature, and excessive undervoltage.
3. The hydrogen jet control method according to claim 1, wherein the method of determining the degree of the malfunction thereof to correspondingly limit the real-time hydrogen jet amount in accordance with the degree of the malfunction includes:
judging the faults of the driving circuit and dividing the fault degree into 3 grades of faults;
when the fault degree is a level 1 fault, limiting the real-time hydrogen injection flow to 75% of the original flow;
when the fault degree is a 2-level fault, limiting the real-time hydrogen injection flow to be 50% of the original flow;
and when the fault degree is a 3-level fault, directly stopping the real-time hydrogen injection flow.
4. The hydrogen spray control method according to claim 1, characterized by further comprising:
and acquiring any one or more state information of voltage, current, temperature and pressure of the hydrogen sprayer in real time to serve as reference data for adjusting the control signal.
5. A hydrogen injection control apparatus, characterized in that the apparatus comprises:
the acquisition module is used for receiving the hydrogen injection instruction and calculating the target hydrogen injection flow in real time according to the hydrogen injection instruction;
the processing module is used for sending a hydrogen spray control signal containing a PWM signal and/or Peak-Hold output current according to the target hydrogen spray flow so as to control the hydrogen spray of the hydrogen sprayer in real time; the method for controlling the hydrogen spraying of the hydrogen sprayer in real time comprises the following steps: adjusting the duty cycle of the PWM signal to change the on-time of the hydrogen sprayer in the period; and/or adjusting the Peak-Hold output current to be Peak large current or Hold small current so as to change the response speed of the hydrogen sprayer; preferentially selecting and adjusting the duty ratio of the PWM signal, and then selecting and adjusting the Peak-Hold output current to be a Peak large current or a Hold small current; acquiring the real-time hydrogen jet flow quantity of the hydrogen sprayer in real time, and comparing the real-time hydrogen jet flow quantity with the target hydrogen jet flow quantity to correspondingly adjust the hydrogen spray control signal according to the difference; detecting the fault of a driving loop in real time, and judging the fault degree of the driving loop so as to correspondingly limit the real-time hydrogen jet flow according to the fault degree; and judging the fault of the driving circuit by acquiring any one or more state information of voltage, current, temperature and pressure of the hydrogen sprayer or the fuel cell in real time.
6. A hydrogen injection control apparatus, characterized in that the apparatus comprises: a memory having a computer program stored thereon; a processor for executing the computer program stored in the memory, the program, when executed by the processor, implementing the hydrogen injection control method of any one of claims 1 to 4; and the communicator is used for being in communication connection with external equipment to receive the hydrogen spraying command.
7. A hydrogen injection control system, the system comprising: the hydrogen spray control apparatus, the hydrogen sprayer, and the sensor according to claim 6;
the hydrogen sprayer is electrically connected with the hydrogen spraying control equipment and used for receiving a hydrogen spraying control signal sent by the hydrogen spraying control equipment to drive hydrogen spraying;
the sensor is used for acquiring the real-time hydrogen spraying flow of the hydrogen sprayer in real time and acquiring any one or more state information of voltage, current, temperature and pressure of the hydrogen sprayer in real time; the sensor is respectively electrically connected with the hydrogen sprayer and the hydrogen spraying control equipment.
8. A computer-readable storage medium on which a computer program is stored, characterized in that the program, when executed by a processor, implements the hydrogen injection control method according to any one of claims 1 to 4.
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